Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=41,n2=48,x¯1=56.1,x¯2=71.2,s1=5s2=10.6n1=41,x¯1=56.1,s1=5n2=48,x¯2=71.2,s2=10.6 Find a 94.5% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances. Confidence Interval =

Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=41,n2=48,x¯1=56.1,x¯2=71.2,s1=5s2=10.6n1=41,x¯1=56.1,s1=5n2=48,x¯2=71.2,s2=10.6 Find a 94.5% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances. Confidence Interval =

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below:

n1=41,n2=48,x¯1=56.1,x¯2=71.2,s1=5s2=10.6n1=41,x¯1=56.1,s1=5n2=48,x¯2=71.2,s2=10.6

Find a 94.5% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances.

Confidence Interval =

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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